.container {
  background: #FF678C;
  box-sizing: border-box;
  display: flex;
  flex-flow: column wrap;
  height: 80vh;
  margin-bottom: 5vh;
  text-align: center;
  text-transform: uppercase;
  width: 90vw;
}

.card {
  align-items: center;
  background: white;
  background-size: cover;
  background-position: center;
  border: 5px solid white;
  box-sizing: border-box;
  color: white;
  display: flex;
  flex-grow: 0;
  font-family: sans-serif;
  font-size: 30px;
  font-weight: bold;
  height: 50%;
  justify-content: center;
  outline: 5px solid white;
  text-shadow: 0 0 5px black;
}
.card:nth-child(6n-5) {
  height: 25%;
}
.card:nth-child(6n-4) {
  height: 75%;
}
.card:nth-child(6n-3) {
  height: 50%;
}
.card:nth-child(6n-2) {
  height: 50%;
}
.card:nth-child(6n-1) {
  height: 66.666%;
}
.card:nth-child(6n) {
  height: 33.333%;
}

body {
  margin: 0;
}

.background {
  align-items: center;
  background: #FF678C;
  display: flex;
  flex-direction: column;
  height: 100vh;
  justify-content: center;
  width: 100vw;
}

button {
  background: white;
  border: 2px solid transparent;
  border-radius: 0;
  color: #FF648A;
  cursor: pointer;
  font-size: 24px;
  font-weight: bold;
  padding: 10px 20px;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
button:hover {
  background-color: #FF648A;
  border: 2px solid white;
  color: white;
}